CFVR7704 - AISC-ASD13: Shear Checking of a W-shape Section

Shear checking according to AISC-ASD13 W-shape cross section.

A cantilever steel beam is subjected to end shears of 48 kips from dead load and 145 kips from live load.
The beam has a length of 100 in.
Section material properties: ASTM A992, Fy = 50 ksi , Fu = 65 ksi
Geometric properties: W24x62, d = 23.7 in., tw = 0.430 in. The aim of the example is to obtain the shear criterion according to AISC-ASD13.
Reference: AISC, Design Examples, Version 13.0 Example G.1a, W-Shape in Strong-Axis Shear

Element types used in the model: BEAM3

Needed CivilFEM Modules:
Geotechnical Module
Bridges and Civil Non Linearities Module
Advanced Prestressed Concrete Module

The example can be launched on an educational license.

KEYWORDS

Beam

Cross Section

Steel

Code Checking/Design

ASD 13

Model Statistics
Number of elements	1
Number of nodes	2
Number of civil materials	1
Number of cross sections	1
Number of shell vertices	0

Log file: CFVR7704.DAT

! DESCRIPTION 

FINISH
~CFCLEAR,,1
NomFile='CFVR7704'
/TITLE, %NomFile%, AISC-ASD13: Shear checking W-Shape section

!-------------------------------------------------------------------------------
! Model definition
!-------------------------------------------------------------------------------
! CivilFEM Setup: Code & Units
~UNITS,,LENG,IN
~UNITS,,TIME,S
~UNITS,,FORC,KIPS
~UNITS,,PRES,,0 ,ksi
~CODESEL,ASD13
   

/PREP7

! Materials
~CFMP,1,LIB,STEEL,ASTM,A572Gr50
~CFMP,1,USER
~CFMP,1,ASD13,Fu,,448.159E06,1,0,0 ! same values as ASTM A992

! Element Types
ET,1,BEAM3  ! Type 1: 2D Beam

! Cross Section
~SSECLIB,1,1,51,111  !W 24x62

! Beam & Shell Property
~BMSHPRO,1,BEAM,1,1,,,3,1,0,,Beam 1

! Nodes
N,1,0.,0.
N,2,100.,0.

! Elements
E,1,2
  
/SOLU
! Loads
D,1,ALL
F,2,FY,48. + 145.

SOLVE

/POST1
~CFSET,,1,1 
~CHKSTL,SHEAR

!-------------------------------------------------------------------------------------
! DATA CHECK
!-------------------------------------------------------------------------------------
! Data comparison number
NComp = 3
NComp_ch = 0

! Marix dim.
*DIM,LABEL,CHAR,Ncomp,1
*DIM,LABEL_CH,CHAR,Ncomp_ch,1
*DIM,VALUE,,Ncomp,3
*DIM,VALUE_CH,CHAR,Ncomp_ch,3
*DIM,TOLER,,Ncomp,2


! Labels
LABEL(1,1) = 'VN'
LABEL(2,1) = 'AW'
LABEL(3,1) = 'CRT_TOT'

! Correct values
VALUE(1,1) = 306.
VALUE(2,1) = 10.2
VALUE(3,1) = 193./(306./1.50)

! Comparison
~PLLSSTL,VN
*GET,VALUE(1,2),ELEM,1,ETAB,CFETAB_J
~PLLSSTL,AW
*GET,VALUE(2,2),ELEM,1,ETAB,CFETAB_J
~PLLSSTL,CRT_TOT
*GET,VALUE(3,2),ELEM,1,ETAB,CFETAB_J

! Warning and error tolerances
TOLER(1,1)= 0.01*VALUE(1,1) $ TOLER(1,2)= 0.01*VALUE(1,1)
TOLER(2,1)= 0.01*VALUE(2,1) $ TOLER(2,2)= 0.01*VALUE(2,1) 
TOLER(3,1)= 0.01*VALUE(3,1) $ TOLER(3,2)= 0.01*VALUE(3,1) 

!--------------------------------------------------------------------------------------
! Results comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC

Results

Label	Target	CivilFEM	Ratio	Tolerance
VN	306	306.25	0.999	3.06
AW	10.2	10.208	0.999	0.102
CRT_TOT	0.94608	0.94532	1.001	0.009461

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CFVR7704 - AISC-ASD13: Shear Checking of a W-shape Section

Shear checking according to AISC-ASD13 W-shape cross section.

Results